DR. JOSEPH GUADALUPE MARQUEZ D.O.
NPI 1902989528
Psychiatry & Neurology - Child & Adolescent Psychiatry in Downey, CA
NPI Status: Active since October 24, 2006
Contact Information
7285 QUILL DR
DOWNEY, CA
ZIP 90242
Phone: (562) 940-6077
- Individual
- Male
- Psychiatry & Neurology
- Child & Adolescent Psychiatry
About JOSEPH MARQUEZ
This page provides the complete NPI Profile along with additional information for Joseph Marquez, a provider established in Downey, California with a medical specialization in Psychiatry & Neurology, focusing in child & adolescent psychiatry . The healthcare provider is registered in the NPI registry with number 1902989528 assigned on October 2006. The practitioner's primary taxonomy code is 2084P0804X with license number 20A8470 (CA). The provider is registered as an individual and his NPI record was last updated 15 years ago.
- NPI
- 1902989528
- Provider Name
- DR. JOSEPH GUADALUPE MARQUEZ D.O.
- Gender
- Male
- Entity Type
- Individual
- Location Address
- 7285 QUILL DR DOWNEY, CA 90242
- Location Phone
- (562) 940-6077
- Mailing Address
- 11351 BASKERVILLE RD ROSSMOOR, CA 90720
- Is Sole Proprietor?
- Yes
- Enumeration Date
- 10-24-2006
- Last Update Date
- 01-31-2011
- Code Navigator
Location Map
Specialty - Primary Taxonomy
The NPI enumerator requires providers to submit at least one taxonomy code. A taxonomy code is a unique 10-character code that describes the healthcare provider type, classification, and the area of specialization. There could be only one primary taxonomy code per NPI record. For individual NPIs the license data is associated to the taxonomy code.
- Classification
Psychiatry & Neurology Child & Adolescent Psychiatry
- Taxonomy Code
- 2084P0804X
- Type
- Allopathic & Osteopathic Physicians
- License No.
- 20A8470
- License State
- CA
- Taxonomy Description
- Child & Adolescent Psychiatry is a subspecialty of psychiatry with additional skills and training in the diagnosis and treatment of developmental, behavioral, emotional, and mental disorders of childhood and adolescence.
Secondary Taxonomies
The provider has reported to the NPI enumerator additional taxonomy codes. Multiple taxonomy codes may represent subspecialties or other areas of specialization the provider maybe licensed to practice.
| No. | Taxonomy Code | Type | Classification / Specialization |
License No. (State) |
|---|---|---|---|---|
| 1 | 2084P0800X | Allopathic & Osteopathic Physicians | Psychiatry & Neurology | 20A8470 (CA) |
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NPI NPI Number Validation
How NPI Validation Works
The NPI validation process uses the ISO-standard Luhn algorithm, a mathematical "handshake", to ensure that a provider's 10-digit ID is authentic and free of common typing errors.
To verify the NPI 1902989528, we treat the final digit (8) as the Check Digit—the target answer we need to reach. The process begins by taking the first nine digits and adding a constant value of 24, which accounts for the "80840" prefix required for all U.S. health identifiers. We then double every other digit starting from the right and sum the individual digits of those results together. For this specific NPI, that total comes to 72. The final step is to find the difference between that total and the next multiple of ten (80 - 72 = 8).
Digit-by-digit view
Use the first nine digits for the calculation. Starting from the right, double every other digit. The last digit is the check digit and is not part of the calculation.
Step 1: Double every other digit from the right
Starting with the rightmost digit of the first nine digits, double every other value. If doubling creates a two-digit number, add those digits together.
Step 2: Add all digits plus the NPI constant
Add the transformed values, the unchanged digits, and the constant 24.
Step 3: Find the amount needed to reach the next multiple of 10
The next multiple of ten after 72 is 80. The difference is the calculated check digit.
Other Providers at the Same Location
The following 20 providers are registered at the same or a nearby location.
DOWNEY, CA 90242
DOWNEY, CA 90242
Frequently Asked Questions
The NPI number assigned to this healthcare provider is 1902989528, enumerated as an "individual" on October 24, 2006.
The provider is located at 7285 QUILL DR DOWNEY, CA 90242 and the phone number is (562) 940-6077.
Psychiatry & Neurology with taxonomy code 2084P0804X and a focus in Child & Adolescent Psychiatry.
